Locking or unlocking the PM5561 / PM5661 / PM5761
Before you lock your meter:
Make sure you have completed all necessary configuration.
Perform a meter initialization reset to clear any previously accumulated meter data.
A lost lock passcode cannot be recovered.
Permanently locked device
Record your device's user and passcode information in a secure location.
Failure to follow these instructions can result in data loss.
- Navigate to .
- Set Security Lock by entering a non-zero passcode (a number between 1 and 9999).
- Select Yes to confirm locking the
meter, then exit the screen.A lock icon appears on the upper left corner of the screen.
- Make sure you record and store the lock passcode in a secure
location.NOTE: To change the lock passcode, unlock the meter then lock it again using a different passcode. Make sure you record this new passcode and store it in a secure place.